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Pre-Calc Homework Solutions 194

# Pre-Calc Homework Solutions 194 - 194 Chapter 4 Review 16...

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16. We use a combination of analytic and grapher techniques to solve this problem. Depending on the viewing windows chosen, graphs obtained using NDER may exhibit strange behavior near x 5 2 because, for example, NDER ( y , 2) < 5,000,000 while y 9 is actually undefined at x 5 2. The graph of y 5 } 5 2 4 x x 1 2 4 2 x 2 2 x 3 } is shown below. [ 2 5.875, 5.875] by [ 2 50, 30] y 9 5 5 The graph of y 9 is shown below. [ 2 5.875, 5.875] by [ 2 50, 30] The zero of y 9 is x < 0.215. y 0 5 5 5 The graph of y 0 is shown below. [ 2 5.875, 5.875] by [ 2 20, 20] The zero of x 3 2 6 x 2 1 12 x 2 13 (and hence of y 0 ) is x < 3.710. (a) Approximately ( 2‘ , 0.215] (b) Approximately [0.215, 2) and (2, ) (c) Approximately (2, 3.710) (d) ( 2‘ , 2) and approximately (3.710, ) (e) Local maximum at < (0.215,
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